The goblet cells of the alimentary canal are modified from:

What is the epithelial layer of the cornea made of?

Describe the location and function of the following tissues:
$(i)$ Squamous Epithelium
$(ii)$ Cuboidal Epithelium

Assertion: The squamous epithelium is made of a single thin layer of flattened cells with irregular boundaries.
Reason: They are found in walls of blood vessels and air sacs of lungs.

Pseudostratified columnar epithelium is found in

Where is the compound squamous epithelium found?